This opinion is worth what you paid for it:

Don't make your password requirements less strict. Don't encourage people to use weak passwords that are likely shared across sites. That leads to pain and suffering over the long term.

If you want to reduce friction for people who don't/won't use a password manager, provide a passwordless option like a login link that is e-mailed to them. Yes, people will likely complain about "your service is supposed to be my email, why are you requiring an e-mail to login", in which case they should be using a strong password.

To the person requesting weak passwords: Just set up google or firefox password password manager, it will auto suggest a strong password on the registration page and save it for use across devices. There is zero reason to be using the same password across accounts, and a lot of reason not to.

Attackers do actively try passwords you have used on other sites to try to compromise your accounts elsewhere. This happens when services leak passwords or password hashes. If your password is short and lowercase, it really doesn't matter if only your password hash has been leaked, it might as well have just been the password itself. This is the lowest-hanging fruit for attackers.

Thanks for your opinion. I appreciate it. I think that makes a lot of sense. I also like the idea of passwordless, I'll definitely have a look at that!